8394561 has 24 divisors (see below), whose sum is σ = 14589120. Its totient is φ = 4543776.

The previous prime is 8394559. The next prime is 8394577. The reversal of 8394561 is 1654938.

8394561 is a `hidden beast` number, since 8 + 3 + 94 + 561 = 666.

It is not a de Polignac number, because 8394561 - 2¹ = 8394559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8394541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2310 + ... + 4703.

It is an arithmetic number, because the mean of its divisors is an integer number (607880).

Almost surely, 2^8394561 is an apocalyptic number.

It is an amenable number.

8394561 is a deficient number, since it is larger than the sum of its proper divisors (6194559).

8394561 is a wasteful number, since it uses less digits than its factorization.

8394561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7045 (or 7042 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 8394561 is about 2897.3368806544. The cubic root of 8394561 is about 203.2353874473.

The spelling of 8394561 in words is "eight million, three hundred ninety-four thousand, five hundred sixty-one".